Bluetooth: MAINTAINERS: Add Bartosz Golaszewski as Qualcomm hci_qca maintainer

There are no dedicated maintainers of Qualcomm hci_qca Bluetooth
drivers, but there should be, because these are actively used on many
old and new platforms.  Bartosz Golaszewski agreed to take care of this
code.

Link: https://lore.kernel.org/r/CAMRc=MdqAATOcDPhd=u0vOb8nLxSRd7N8rLGLO8F5Ywq3+=JCw@mail.gmail.com/


Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Acked-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>